Provider Profile
Listed in the NPI registry as a clinical psychologist, Marisa Kostiuk, PhD practices in Westminster, CO. Marisa is also listed as specializing in psychologist and psychologist — clinical. According to Medicare claims data, Marisa cared for 28 Medicare patients across 42 services. The services billed most often include psychotherapy, 30 minutes and psychiatric diagnostic evaluation. NPI 1376103614 identifies this record in the national registry.
Factual summary compiled by Guide.md from public records; not written by this provider.
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
7403 CHURCH RANCH BLVD UNIT 107
Westminster, CO 80021
777 Bannock St
Denver, CO 80204
Within Clinical Psychology generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
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42 services · 28 patients · 2 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Psychotherapy, 30 minutes | Treatment | 90832 |
29 | Less often than most peers in Clinical Psychologist |
| Psychiatric diagnostic evaluation | Treatment | 90791 |
13 | Less often than most peers in Clinical Psychologist |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Dr. Kostiuk is a clinical psychologist in Westminster, CO. That is the designation recorded for this NPI in the federal registry.
NPI registry
Dr. Kostiuk is listed at 7403 Church Ranch Blvd Unit 107, Westminster, CO 80021. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
The number on file is (720) 848-0000. Contact the office directly to confirm availability and scheduling.
NPI registry
Dr. Kostiuk's National Provider Identifier is 1376103614. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Dr. Kostiuk attended Other, graduating in 2019. This comes from the CMS National Downloadable File.
CMS public data
Dr. Kostiuk has 7 years experience. Calculated from a graduation year of 2019, reported in the CMS National Downloadable File.
CMS public data
According to Medicare billing data, Dr. Kostiuk provides treatments such as psychotherapy, 30 minutes and psychiatric diagnostic evaluation. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Kostiuk. If this is you, claiming it is free.
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